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1.
通过各种大米的理化参数及各种碾米精度的研究,找出了各种理化参数与大采食味评分之间的相关性,以大米直链淀粉含量、胶稠度、糊化温度(碱扩散值)及膨胀率作为评定大米的食用品质指标。  相似文献   

2.
前言大米营养强化在世界上有40多年的历史,在以大米为主食的菲律宾、锡兰、日本等亚洲国家,以及美洲的哥伦比亚、委内瑞拉和美国南方各州,对大米都进行不同程度的营养强化,对改善和提高人们的营养状况和健康水平都起到积极的效果。FAO/WHO以及许多国家的粮食食品管理机构,不同情况地颁布了大米营养强化的各种法规与法令。大米营养强  相似文献   

3.
本文选择了4种籼、粳、糯稻谷品种进行不同精度的加工,并对加工后的大米进行营养成分分析。结果表明:大米的几种主要营养成分,除碳水化合物以外,其他成分如必需氨基酸、维生素及矿物元素等随加工精度的提高而降低,精度愈高、损失愈大,基本上成线性相关。并找出合理的加工精度,为我国目前大米加工精度及碾米副产品利用提供了科学依据。  相似文献   

4.
一、引言大米在煮饭、烧粥前必须先经淘洗,这已是几千年的传统习惯,不仅造成了大米中固形物和营养成分的大量流失,而且增加了做饭的工序和时间,同时还耗用大量淘米用水。目前世界上一些发达国家,多数生产和食用清洁米,并在此基础上进一步对大米进行氨基酸和维生素的营养强化,以提高大米的营养价值。而我国在这方面尚处于空白状态。本试验和研究主要根据我国的国情,对市销大米在淘冼中的损失及微生物的含量情况,进行测  相似文献   

5.
以大米蛋白为基料,研究了硬脂酸、蜂蜡、蔗糖脂肪酸酯3种类脂物质对大米蛋白膜的性能的影响,并考查了添加不同类脂量后大米蛋白膜机械性能争透水率的变化。实验表明,加入硬脂酸、蔗糖脂肪酸脂及蜂蜡使膜的阻水性有了较大的提高,添加硬脂酸、蔗糖脂肪酸脂对膜的机械性能影响不大。  相似文献   

6.
利用动态流变仪考察了 8种不同理化指标的大米淀粉在加热和冷却过程中凝胶黏弹性的变化 ,并用SPSS统计软件对大米淀粉理化指标与凝胶特性进行了相关性分析 .实验结果表明 :大米淀粉胶凝的速度和凝胶强度主要与淀粉中的直链淀粉含量有关 ,直链淀粉含量高的淀粉胶凝速度快 ,凝胶强度大 ;大米淀粉的胶稠度和淀粉粒的膨胀度等指标对其凝胶特性影响并不显著 .支链淀粉形成的凝胶其强度随温度的变化是可逆的 ,随着淀粉中直链淀粉含量的增加 ,这种变化的不可逆性增强 .  相似文献   

7.
应用模糊数学理论建立了一套大米增香剂对普粳米增香效果的评定方法,并用GC-MS方法验证。该评定方法成为大米增香剂研究和检测的重要手段之一。  相似文献   

8.
本研究以实验论证了用大米硫化氢含量代替脂肪酸含量作为大米新鲜度指标的合理性。通过对此试验证实珠光精洁米此市售标一粳具有较好的保鲜性能。  相似文献   

9.
报告了新型颗粒淀粉水解酶在大米酒精生产上的最新进展.采用杰能科公司的颗粒淀粉水解酶STARGENTM以大米为原料,发酵效率可大大提高,同时对发酵醪液进行了GC-MS分析结果表明,生料工艺的发酵产物杂质与传统工艺相比也有很大程度上的减少.  相似文献   

10.
对Monacusspp.3的固体发酵生产MonacolinK的培养条件和培养基进行了优化.考察了物料厚度、起始含水量、发酵时间、起始pH值等发酵条件,以及大米培养基中添加附加碳源、氮源、磷酸盐等的影响.结果表明,固体发酵的培养条件为:物料(大米)厚度在4cm以下,起始pH值自然,培养温度32℃,相对湿度60%~70%,发酵时间为12d;经单因素和正交试验得适宜的发酵培养基为:大米100g,甘油0.2g,玉米浆0.15g,起始含水量50%.且以此优化条件固体发酵培养,MonacolinK产量稳定在1.4mg/g左右,最高产量为1.6mg/g.  相似文献   

11.
We report a rare type of aneurysm of the sinus of Valsalva. The orifice of the aneurysm was in the right sinus of Valsalva and protruded superiorly, which is a direction not typical of right sinus of Valsalva aneurysms. Intraoperatively, it became clear that the aneurysm was located in the right sinus of Valsalva with extracardiac protrusion. Inspection through the aortotomy revealed that the orifice of the aneurysm opened between the orifice of the right coronary artery and the commissure between the right and left coronary cusps. The aneurysm was obliterated with a pledgeted suture from outside the orifice of the aneurysm. Early prophylactic surgical treatment of the aneurysm makes the operation simple and prevents subsequent development of complications, such as compression of the coronary artery, thrombosis, and/or spontaneous rupture.  相似文献   

12.
了解胰十二指肠切除术治疗胰头和壶腹部癌的效果和影响病人生存的因素。方法:分析230例胰头和壶腹部癌的主要表现,辅助检查、手术并发症、手术死亡率,调查术后生存情况及影响病人长期生存的因素。结果:本组病人出现黄疽90.9%,腹痛56.1%,发热32.6%,白陶土样大便13.5%。B超、CT和ERCP检查准确率分别为68.3%、79.3%和66.6%。手术并发症72例(31.3%),死亡20例(8.7%)。术后1、3、5年存活率分别为46.7%,17.4%和52%。肿瘤直径、淋巴结转移和切缘状态是影响病人术后生存的因素,而肿瘤分化程度和病人年龄对生存率无明显影响。结论:胰头和壶腹部癌临床表现有多样性,B超和CT等辅助检查有局限性,手术有高并发症,5年生存率低下,手术治疗远近期效果都不理想。  相似文献   

13.
Amyloidosis is a systemic disease affecting many organs, characterized by the deposition and accumulation of hyaline, eosiniphilic and proteinaceous material in various tissues. This report presents a patient with anurea caused by primary amyloidosis of the lower third of the ureters, the ureterovesical junction and the urinary bladder.  相似文献   

14.
Summary The combination of two well established methods — the bladder-psoas-hitch procedure and the Boari flap — succeeded in replacing 2/3 of the lower ureter. After encouraging results on dogs, we performed this method successfully in one patient.Dedicated to Professor Dr. Wilhelm Brosig, on his 60th birthday, November 27th, 1973.  相似文献   

15.
采用带蹬吊带体系治疗出生2月~3岁间婴幼儿先天性髋脱位(congenitaldislocationofthehip,CDH)418例,均获满意复位,并对其中的168例进行了2~11年远期随访。结果表明:近期复位率为100%,远期优良率为95%;患侧髋臼发育与健侧相比无显著性差异。从而证实该体系是治疗CDH的一种比较全面的方法,成功率高、远期效果好及并发症低。同时强调CDH必须早期诊断,及时治疗。  相似文献   

16.
目的:观察中药周期性阶段疗法治疗黄褐斑的临床疗效。方法:将123例患者随机分为两组,治疗组62例,采用月经后服用补精血颗粒与月经前及经期服用理气养血活血颗粒的周期性阶段治疗;对照组61例,采用补精活血颗粒的持续性给药治疗,2个疗程后判定临床疗效。结果:总有效率治疗组为95.08%,对照组为93.22%,两组比较差异无统计学意义(P〉0.05)。结论:两组临床疗效相当,均能有效治疗黄褐斑。  相似文献   

17.
We resected the head of the pancreas in three patients with occlusive diseases or anomalous arrangement of the abdominal visceral arteries. The first patient who was diagnosed with cancer of the head of the pancreas; pancreatoduodenectomy (PD) was performed. Preoperative celiac angiography showed no significant occlusion of the celiac axis, while superior mesenteric arteriography visualized the common hepatic artery, with delayed retrograde filling. At the completion of the PD, an unsuspected atherosclerotic celiac occlusion was identified. Celiac reconstruction was performed. The second patient was diagnosed with cystadenoma of the head of the pancreas and had congenital ostial occlusion of the superior mesenteric artery (SMA), with dilated pancreaticoduodenal (PD) arcades as a celiacomesenteric collateral pathway. Duodenum-preserving resection of the head of the pancreas was performed, with preservation of the PD arcades. The third patient was diagnosed with cancer of the common bile duct, and exhibited a replaced common hepatic artery that arose from the SMA and formed PD arcades. PD was performed, with revascularization of the common hepatic artery. Following surgery, the three patients have done well for 18, 27, and 9 months, respectively. Careful preoperative investigation to identify abnormalities of the visceral arteries is necessary before resection of the head of the pancreas is performed.  相似文献   

18.
We developed a new technique for partial resection of the head of the pancreas with an end-to-side pancreaticoduodenostomy, while preserving the duodenum, the common bile duct, and the upper part of the head of the pancreas around the duct of Santorini. A resection of the inferior head of the pancreas was performed in a patient with an intraductal mucin-producing tumor of the pancreas. This procedure is considered to be appropriate for treating both benign disease and noninvasive malignant disease involving either the uncinate process or the duct of Wirsung, because it removes both the uncinate process and the pancreatic tissue around the duct of Wirsung. We thus believe that a resection of the inferior head of the pancreas with an end-to-side pancreaticoduodenostomy can help play a significant role in the management of patients with benign diseases and localized malignant tumors of the pancreas.  相似文献   

19.
Pain, loss of motion, and instability in the small joints of the hand can result in debilitating loss of function and deformity. Salvage procedures are considered in the setting of complex nonreconstructable fractures, after failure of initial fracture treatment, and for the treatment of severe joint arthritides. This article reviews the merits of various reconstructive options in these settings and examines the pertinent anatomy, clinical challenges, and risk-benefit profiles of each option. The review is limited to salvage reconstructive procedures of the small joints of the hand.  相似文献   

20.
Abtract Two cases of carcinoma of the bifurcation of the main hepatic ducts are presented. The tumors were successfully removed by resection of the bifurcation in one case, and by left hepatic lobectomy in the other. Some other 38 cases of the same condition collected from the world literature are briefly reviewed and discussed with particular reference to their surgical interventions.  相似文献   

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